My cat has allergies. Can I give him Benadryl or other safe OTC meds?
Updated On September 23rd, 2025
Pet's info: Cat | Mixed Breed | Male | unneutered | 7 years and 10 months old | 10 lbs
My cat has herpes and seasonal allergies, he is currently taking L-Lysine for his herpes, but what can he take for his allergies? I thought he could take benadryl, but after consulting with a vetenary hospital they said that was no good, can you recommend good allergy medication for my cat?
2 Answers
Most Helpful Answer
Published on May 10th, 2018
Benadryl (diphenhydramine) can be used for cats. Other over the counter antihistamines for use in cats include Chlor-Trimeton® (chlorpheneramine), Claritin® (loratadine) and Zyrtec® (cetirizine). You can get doses for any of the above from your veterinarian. Legally, we are prohibited from supplying doses for medications, even OTC meds, in the absence of a physical exam and a VPCR (Veterinarian-Patient-Client Relationship).
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Related Answers from Veterinarians
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Published on November 11th, 2016
You likely will not be able to purchase an injectable antihistamine for your cat. Diphenhydramine is commonly used in veterinary medicine to treat various allergic reactions. It is possible to get diphenhydramine compounded into a transdermal gel. Ask your vet or search online for a veterinary compounding pharmacy.
1Pet Parents found this answer helpful
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